County annual report · FIPS 47169
2021 Trousdale County, TN Power Outage Report
In 2021, customers in Trousdale County, TN went without power for an average of 4.8 hours, a total of 25K customer-hours (Tennessee average 3.7 hours). That ranks 27th worst of 84 Tennessee counties and 1364th of 2,974 nationally.
Compared with TN, the US and 2020
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Trousdale County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 4, 2021 12:00 | May 5, 2021 00:00 | 12h | 2,855 | 8,279 |
| 2 | December 6, 2021 12:15 | December 6, 2021 18:00 | 5h 45m | 1,205 | 4,769 |
| 3 | August 26, 2021 20:15 | August 26, 2021 22:45 | 2h 30m | 1,137 | 2,267 |
| 4 | January 1, 2021 20:00 | January 1, 2021 21:00 | 1h | 897 | 678 |
| 5 | January 25, 2021 23:30 | January 26, 2021 00:45 | 1h 15m | 893 | 1,116 |
| 6 | August 13, 2021 19:15 | August 13, 2021 22:00 | 2h 45m | 892 | 916 |
| 7 | December 20, 2021 22:45 | December 20, 2021 23:30 | 45m | 889 | 667 |
| 8 | February 16, 2021 15:45 | February 16, 2021 18:15 | 2h 30m | 847 | 963 |
| 9 | December 21, 2021 18:45 | December 21, 2021 19:15 | 30m | 834 | 209 |
| 10 | November 23, 2021 14:00 | November 23, 2021 15:30 | 1h 30m | 403 | 106 |
Outage episodes by size in 2021: 17 reached 100+ customers, 3 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Trousdale County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Tri-County Elec Member Corp (TN) | 2021 | 4.2 hrs | 2.98 | 3.9 hrs | 2.89 |
| Middle Tennessee E M C | 2021 | 65 min | 1.00 | 55 min | 0.96 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 73% of Tennessee's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 5,242 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Trousdale County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Trousdale County, TN annual power outage report, 2021, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2021/tennessee/trousdale-county